: If the device is not responding, you can select Uninstall device in Device Manager (check "Delete the driver software for this device") and then replug the adapter to force a clean reinstallation.
Plug your USB adapter into a working PC. Open (Right-click Start button > Device Manager). Look under Network adapters for "Realtek 8811CU Wireless LAN 802.11ac USB NIC." This confirms you have the correct hardware ID. realtek 8811cu wireless lan 80211ac usb nic update portable